Can liners aren't protecting the food, they are protecting the can from acidic f... | Hacker News

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nobodysfool on July 28, 2014 | parent | context | favorite | on: Why cans of soup are shaped the way they are

Can liners aren't protecting the food, they are protecting the can from acidic foods.

barrkel on July 28, 2014 [–]

Acid + metal = salt + hydrogen.

That salt will impart flavour on the food.

So you can argue it both ways. Even just a little bit of a metallic taste in most food is quite unpleasant.

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